package com.heima.article.service.impl;

import com.baomidou.mybatisplus.core.conditions.Wrapper;
import com.baomidou.mybatisplus.core.conditions.query.LambdaQueryWrapper;
import com.heima.article.entity.ApAuthor;
import com.heima.article.mapper.ApAuthorMapper;
import com.heima.article.service.IApAuthorService;
import com.baomidou.mybatisplus.extension.service.impl.ServiceImpl;
import com.heima.common.dto.ResponseResult;
import com.heima.common.enums.AppHttpCodeEnum;
import org.springframework.stereotype.Service;

import java.util.Date;

/**
 * <p>
 * APP文章作者信息表 服务实现类
 * </p>
 *
 * @author 舌太来
 * @since 2022-04-11
 */
@Service
public class ApAuthorServiceImpl extends ServiceImpl<ApAuthorMapper, ApAuthor> implements IApAuthorService {

    @Override
    public ResponseResult<ApAuthor> saveAuthor(ApAuthor entity) {
        //校验参数
        if (entity == null || entity.getUserId() == null) {
            return ResponseResult.errorResult(AppHttpCodeEnum.PARAM_INVALID);
        }
        //判断user_id是否存在
        LambdaQueryWrapper<ApAuthor> query = new LambdaQueryWrapper<>();
        query.eq(ApAuthor::getUserId, entity.getUserId());
        ApAuthor one = this.getOne(query);
        //已存在直接返回
        if (one != null) {
            return ResponseResult.okResult(one);
        }
        //不存在的话新增用户
        //创建时间由后端写入
        entity.setCreatedTime(new Date());
        this.save(entity);
        return ResponseResult.okResult(entity);
    }
}
